Cooling and ventilating attachment for cars or vessels.



no. 646,522. Patenfd Apr. 3, I900. a. A. a F. nurm.

COOLING AND VENTILATING ATTACHMENT FUR CARS 0R VESSELS. (Application medium: 28, 1899.] (No Model.)

:; llllllllllllllllllll 6 agigwvlioa6.

' mt ncnms mm: 00.. moro-uma. WASHINGTON. n c,

UNITED STATES PATENT OFFICE.

GEORGE AMBROSE DUNN AND ROBERT FRANKLIN DUNN, OF DINUBA,

J CALIFORNIA.

COOLING'AND VENTILATING ATTACHMENT FOR CARS OR VESSELS.

SPECIFICATION forming part of Letters Patent No. 646,522, dated April 3, 1900.

Application filed June 28, 1899.

To all whom, it may concern.-

Be it known that we, GEORGE AMBROSE DUNN, a citizen of Canada, and ROBERT FRANKLIN DUNN, a citizen of the. United States, both residing at Dinuba, county of Tulare, State of California, have invented an Improvement in Cooling and Ventilator Attachments for Cars or Vessels; and we hereby declare the following to be a full, clear, and exact description of the same.

Our invention relates to improvements in ventilating cars, vessels, and other movable structures.

It consists, essentially, in forming the car or 'other structure with an interior wall of burlap or other fibrous material interior to the main walls, so as to form an interspace between the outer or main and. the inner or burlap walls. Suitable passages and movable directing gates or valves are made adj ustable at the front end of the car, so as to direct air into the space between the outer and inner walls, and screen-covered openings are also made with devices by which either may be closed or opened. A tank of water situated in the upper part of the car serves to keep the burlap wall moistened, and the air which is driven into the space between the two walls by the motion of the cars is compressed and forced through the burlap wall into the interior of the car in a clean and cool condition. Troughs around the bottom serve to convey away any surplus of water that drips from the burlap.

The invention also comprises details of construction, that will be more fully explained by reference to the accompanying. drawings, in which Figure 1 is a perspective view of a car embodying our invention. Fig. 2 is ahorizontal sectional View. Fig. 3 is a transverse sectional View, and Fig. 4 is a longitudinal sectional view of a portion of the car.

The object of our invention is to provide a cooling and ventilatin g attachment which is applicable to cars and other structures moving rapidly, so that air can be directed and forced into the space between the outer and inner walls and so compressed as to be forced through the inner fibrous wall, which is kept continually moistened, so that the air is de- Serial No. 722,113. (No model.)

prived of dust and foreign matter, and its temperature is very considerably reduced by its passage through the moistened fiber.

A represents a car of anysuitable or desired description, having a tank or tanks in the upperpart of sufficient dimensions to conwhich would prevent the entrance of cinders into the space between the inner and outer end walls, and this space also connects with the spaces along the sides of the car.

Upon the sides of the car at intervals are pivoted wings F, which are turnable about their pivot-points, so as to be closed in and form a part of the outer wall of the car, or they may be opened outwardly toward the direction in which the car is traveling, so as to catch the wind caused by the motion of the car and force it into the spaces along the sides between the outer and inner walls. The air thus forced in will be carried along the inner wall and compressed to a certain ex tent by thepressure or force of the air through which the car is moving, and by this pressure it will be forced through the inner burlap wall into the interior of the car. In order to cleanse and cool this air, connection is made between the tanks and the burlap either by dipping the upper edges of the burlap into the tanks or connecting-troughs, so that Water will pass down the burlap by capillary attraction, or by cocks or other device which will allow a regulated amount of water to be constantly supplied to wet the burlap inner walls. Beneath the lower edges of these walls are troughs G, which receive any surplus of water and convey it to some point of discharge. The air will thus be cleansed of any dust or foreign matter which it may carry and will pass through the wetted burlap in a clean condition. The evaporation caused by its passage through the burlap will also cool it to a very considerable extent, so that the interior of the car can be maintained at a temperature many degrees less than that of the outside atmosphere and without the use of ice or other expensive refrigerating methods.

The arrangement of the ear is such that when running in one direction the wind doors or gates F near the front end of the car and the openings D will be exposed to receive air at the front and allow its escape at the rear. The air thus directed in the channels along the sides will be considerably compressed and will be forced through the burlap or fibrous inner wall as long as the car is in motion.

a a are vertically-disposed hinged gates or shutters near each end of the side channels. These shutters are opened at the front end of the ear to admit air and are closed at the rear, as shown in Fig. 2, so that the air entering the side channels will be prevented from escaping freely at the rear, but will be forced to pass inwardly through the burlap wall, and it escapes outwardly through the rear burlap wall and the openings D. Whenever the cars are runningin the oppositedireetion,tlie doors or gates at that end which is now the front will be opened and those at the rear maybe closed.

In order to allow a free passage of the air past the main side doors J of the car, these doors are made double, the main outer door being of the usual construction and extending approximately from the floor to the roof of the car. The inner door 0 will be made of burlap, like the remainder of the inner wall, and when closed stands in line with the burlap inner wall, so as to leave a continuous space between the outer and inner sides of the car from end to end.

Having thus described our-invention, what we claim as new, and desire to secure by Letters Patent, is-

1. A movable car or structure having tight outer walls and porous inner walls forming passages from end to end between them, means for admitting air into the spaces between the walls whereby the air is filtered before entering the space interior to the inner walls, and means for moistening the inner fibrous wall.

L. A movable car or structure having close outer walls and porous or fibrous inner walls forming side passages between the two, vertical pivoted gates in the outer walls adapted to open outwardly near the front of the car and direct a current of air into the space between the walls whereby the air thus compressed is forced through the fibrous inner wall into the interior of the car, and means for continually moistening the fibrous inner wall with water.

3. A movable car or structure having close outer walls, fibrous independently-supported inner walls forming channels or spaces between the outer and inner walls, screen-covcred openings formed in the ends of the car, vertically-pivoted gates in the sides of the car, with means for opening those near the front end and closing those at the rear whereby currents of air are directed into the spaces along between the outer and inner walls and forced through the inner wall by pressure generated by the movement of the car, and a means for continually moistening the inner fibrous wall.

4. A movable car or structure having tight, close, outer walls, and fibrous independentlysupported inner walls forming spaces or channels between the two, screen-covered openings at the ends of the car, vertically-pivoted gates in the sides with means by which those at the front may be opened to direct currents of air into the spaces between the walls, and those at the rear closed so that air thus received is forced through the inner fibrous wall, a water-tank situated in the upper part of the ear, means for delivering water therefrom to continually moisten the fibrous inner walls and conducting-troughs and escapepassages for collecting and discharging the surplus of water at the bottom.

5. A movable car or structure having closed outer walls with gate-controlled openings through which air may be admitted at the front end, fibrous inner walls forming open channels between themselves and the outer walls into which air passes from the supplyopenings, said car having openings in the ends through which air escapes from the interior, and gates by which the rear ends of the side channels are closed so that the air admitted into said channels is forced to pass through the fibrous walls to the interior.

In witness whereof we have hereunto set our hands.

GEORGE AMBROSE DUNN. ROBERT FRANKLIN DUNN.

\Vitnesses:

J. T. WooTAN, W. P. BooNu. 

